I am a pimp for my younger sister [F]

I (26) years old live with my sister (19).
We lost our parents years ago , and we live together . I take care of payments as I have a small job while she’s still in college .

That’s how we were , but earlier this year , I found out that my sister had sugar daddies and she meets them for money .
I saw it on her phone , a lot of elder men that pay for someone as young as her .

I got mad and we had a fight and all ..
She didn’t agree to stop because it pays her well , alot more than I gain. And she refused to stop saying she will just leave the house if I intervene . Then she told me you can make sure I’m safer by taking care of clients and contacting them so you have all the infos . She also said old men like that would enjoy it when a brother give them his own sister.